31. The readers are attached to one or more antennas that are designed for the particular operating frequency . 32. As always, Cray's design work spend considerable effort on this problem and thus allow higher operating frequencies . 33. Because of its relatively low operating frequency , it has been replaced in modern transducers by piezoelectric devices. 34. Operating Frequency 37.8 to 47.7 MHz.35. Its operating Frequency : Dual band GSM 900 / 1800 or 850 / 1900 ( supports EDGE ). 36. In 2009 eight new operating frequencies were added which brings the total number of frequencies to 167 worldwide. 37. This effectively isolates the oscillator portion from the load, so that loading does not affect the operating frequency . 38. In intelligence operations, local oscillator radiation gives a means to detect a covert receiver and its operating frequency . 39. The feedback resistance and therefore the sensitivity are thus limited by the required operating frequency of the transimpedance amplifier. 40. This allowed the operating frequencies of processors to increase at a much faster rate than that of off-chip memory.